Mechanism for stripping the flats of carding-machines



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Patented July 12,1881.

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W. H. RANKIN. MECHANISM FOR STRIPPING THE FLATS OP UARDING MACHINES.

No. 244,302. Patented July 12,1881.

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1 UNITED STATES PATENT OFFICEO WILLIAM H. RANKIN, 0F LAWRENCE, ASSIGNOR TO WHITEHEAD & ATHERTON MACHINE COMPANY, OF LOWELL, MASSACHUSETTS.

MECHANISM FOii STRIPPING THE FLATS 0F CARDlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 244,302, dated July 12, 1881.

Application filed December 31, 1880. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM H. RANKIN, of Lawrence, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Mechanism for Stripping the Top and Under Flats of Cardin g-Maehines, of which the following is a specifioation.

My invention is an improvement on what is commonly known as the Wellman stripper for carding-machines.

The object I have in view is to so actuate said mechanism that it shall move slowly while passing from one flat to the other and quickly while raising, stripping, and replacing the flat, thus permitting the flats to do more effective work and preventing cotton from appreciably gathering in the space from which the flat being stripped is lifted. I am aware that this result has before been attained; and my invention consists in the combination of instrumentalities, substantially as hereinafter described, whereby I am enabled to obtain said result in a simple, economical, and entirely effective manner.

The nature of my invention and the manner in which the same is or may be carried into effect can best be explained and understood by reference to the accompanying drawings, in Which- Figure 1 is a side elevation of so much of a carding-machine as is required for the purpose of illustrating my invention. Fig. 2 is a transverse vertical central sectional elevation of the same. Fig. 3 is a perspective view of the beltshipping lever detached.

The various parts of the stripping mechanism are carried by the frame A, which swings upon the shaft 13 of the carding-cylinder B, and is actuated to travel back and forth on the rack O in the usual way. The stripper is carried by arms D, which engage the camwheels E, by which the stripper is actuated, and the flats are raised in the customary manner, said cam-wheel being driven from the pulley F.

The parts thus described are of the ordinary construction.

In order to vary the speed of the cam-wheel E at the times and for the purposes hereinbefore specified, I make use of the simple instrumentalities which I now proceed to describe.

Upon the shaft B of the carding-cylinder are mounted, side by side, two pulleys, G H. These two pulleys are entirely independent of one another, pulley G being fast on and revolving at all times with the shaft, and pulley H being loose thereon. The latter pulley moves at a much slower rate of speed than pulley Gr, and obtains this movement from the cross-shaft I, being provided with teeth a, which engage a pinion, b, on the cross-shaft, as shown clearly in Fig. 1, where it will be seen that it is geared down to revolve at a comparatively low speed.

Upon the axle or shaft of the main cam-wheel E is fixed a cam-disk, J, (an edge View of which is shown in Fig. 2,) the edge of which is straddled by the forked upper end of a shippinglever, K, pivoted at o to a bracket-arm on frame A, and having a forked lower end to embrace the belt d, which extends between pulley F and the driving-pulleys G H. The shipping-leveroperating cam J is so shaped that at the proper point in the revolution of the main cam-wheel it will actuate the shipping-lever to throw the belt from the loose slow-moving pulley H to the fast pulley G, there maintain the belt the proper length of time, and then return it again to the slow pulley H. c

From the foregoing it will be seen that the driving-pulleys G H are independent of one another and are actuated by independent instrumentalities to move at constant speeds, the one fast, the other slow; and the varying movement of the stripping mechanism hereinbefore specified is obtained by simply shipping the driving-belt at the proper times from one pulley to the other. This arrangement, while entirely effective, is also simple, avoids complication or multiplication of parts, and is economical and readily made and applied to existing machines.

Having described my invention, what I claim, and desire to secure by Letters Patent, is

1. The combination, substantially as hereinbefore set forth, with the stripping mechanism and rocker-frame which carries the same, ofthe independently-actuated fast and slow drivingpulleys mounted on the axle of the rocker-frame,

a belt leading from said pulleys to said mechanism, and beltshipping mechanism for shiftin g said belt at proper times, as specified, from one pulley to the other.

2. The carding-cylinder and its shaft, the fast and loose driving-pulleys mounted on said sh aft, and the revolving cross-shaft, with which said loose pulleyis geared,in combination with the belt, the stripping mechanism, and mechanism for shipping the belt from one pulley to the other at intervals, as specified, the combination being and actin g substantially as hereinbefore set forth.

3. The combination, with the stripping mechanism and the rocker-frame which carries the same, of the independently-actuated fast and slow driving pulleys mounted on the axle of the rocker-frame, the belt, the belt-shipping lever, and the rotary shipping-lever-operatin g cam, substantially as and for the purposes set forth. 2o

4. The combination, with the stripping mechanism and rocker-frame carrying the same, of two driving-pulleys mounted on the axle of the rocker-frame, mechanism for driving the same at different speeds, a belt leading from 25 said pulley to said stripping mechanism, and belt-shipping mechanism for shifting said belt at proper times, as specified, from one pulley to the other, substantially as herein set forth.

In testimony whereof I have hereunto set my 30 1 hand this 29th day of December, 1880.

WILLIAM H. RANKIN.

Witnesses:

CALEB SAUNDERS, CHARLES G. SAUNDERS. 

